Blow Molded Case and System for Creating Same

ABSTRACT

A blow molded case is disclosed generally comprising a double wall, blow molded base portion having inner and outer case walls, and a lid portion connected to the base portion such that the lid, when in a closed position, at least partly covers the inner case wall of the base portion, which accommodates a first object. The outer wall of the base portion has a hole for receiving a second object, such as a drawer or other receptacle. In certain embodiments, the hole is a punched hole, created by extending a punch through a sidewall of the base portion substantially perpendicular to the parting line thereof. In certain embodiments, the sidewall is non-planar, and in some embodiments, the sidewall includes a recess adjacent the hole for easily gripping the second object.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a continuation of co-pending U.S. patent application Ser. No.11/180,230, filed Jul. 13, 2005, now U.S. Pat. No. 7,455,513.

FIELD OF THE INVENTION

The present invention relates to blow molded cases. More specifically,the invention relates to blow molded cases having a double wall baseportion with a hole in the outer wall thereof for accommodatingadditional objects, such as drawers or removable containers, as well asa system for creating such cases.

BACKGROUND OF THE INVENTION

The use of blow-molding as a method for manufacturing various sorts ofarticles is generally well known. Typically, this process involves theuse of a mold consisting of two separate halves or portions havingcavities of particularly desired shapes and sizes. Usually, one extrudesa large-diameter, sealed tube of molten material (commonly referred toas a “parison”), places the tube between the mold halves, and closes themold around the tube. Fluid pressure is then introduced into the tube,forcing the molten tube against the walls of the cavities, conformingthe tube to the shape thereof. The pressure is maintained until themolten material cools and solidifies. The pressure is then released, themold halves are pulled apart, and the hardened article is ejectedtherefrom.

One such article that is commonly manufactured in this manner is doublewall cases. By producing cases in this manner, one is able to produce adevice that is capable of carrying and protecting tools placed insidethe case that has a multitude of desirable physical characteristics—suchas rigidity, scuff resistance, and impact absorption—yet that isrelatively inexpensive to manufacture. In some instances, these casesare formed as single-piece cases using the process described above,where one mold half forms the exterior of both the base and lid portionsof the case, while the other mold half forms the interior of both baseand lid portions. Usually, the mold half forming the exterior of thecase forms a wall with a smooth, attractive shape, while the mold halfthat forms the interior of the case is often molded with compartments tohold specific contents. In other instances, the process described abovecan be used to separately create the base and lid portions of the case,which can subsequently be connected together.

Though such cases are generally well known in the art, efforts have beenmade to increase the carrying capacity of such cases while reducing thesize of the case, as attempts to increase the interior space of the casecan quickly increase the weight and size of the case due to its doublewall nature. Accordingly, it has been suggested to cut out sections ofthe interior walls of the case in order to utilize the wasted volume ofspace between the double walls. By doing so, the case can be madesmaller in light of the fact that this previously unused space is nowbeing used to house the objects being carried in the case. Moreover, byremoving sections of the walls, the case also decreases significantly inweight.

For example, U.S. Pat. Nos. 3,317,955 and 3,327,841 to Schurman, et al.,disclose cases in which a portion of the case wall is cut out afterblow-molding. Specifically, the '955 patent, which discloses theearliest known double wall case blow-molded case, illustrates arectangular cutout of most of the inside wall of the base portion.Similarly, the '841 patent discloses a partial cutout shaped toaccommodate the outline of a pistol-type soldering gun, where the gun isfurther supported by a cradle molded in the outside wall of the baseportion of the case, while the space under the uncut portion of theinside base is usable for storage of an electric cord, therebyfacilitating the use of what was previously wasted, unused space. Inthese particular examples, because the blow molding process involves theuse of a parison with a continuous, unbroken surface (and thus, the molditself cannot produce any holes in the blow-molded wall other than thehole or holes through which the fluid pressure is introduced), a sectionof the case wall is cut or burned after the blow molding process iscompleted and the case has been ejected from the mold. For example,cutting the inner wall was often accomplished with the use of a smallcircular saw blade mounted to a router and guided by a molded verticallip surrounding the area to be cut. The router was fixed and the casewas moved around the router axis by hand or by mechanical means. Roundholes were often cut with hole saws, or occasionally, were burned.

Another, more improved method of removing a section of the inner wall ofthe case is to punch a hole in this wall during the blow moldingprocess. Examples of such methods are disclosed in U.S. patentapplication Ser. Nos. 10/958,824 and 11/105,721, each of which isassigned to the assignee of the present application and are incorporatedherein by reference. In these varieties, punches are used during theblow-molding process to produce the desired holes. The punch, when in anunactivated position, forms a portion of mold surface, against which thewalls of the blow molded case are blown. Then, at a predeterminedinterval, before the walls of the case are fully hardened, the punch ismoved to an activated position, creating a hole in the wall of the case.

One limitation such cases may still have in some applications, however,is their ability to accommodate compartments for accessories. Forexample, one common use for such cases is tools, such as a drill, which,in addition to the main tool, include other accessories, such as drillbits. However, when a hole is created in an inner case wall, a fairamount of the remaining portions of the wall may be required to providesupport for the perimeter of the hole, which retains the main tool.Accordingly, the available space for additional holes in this inner wallfor accommodating accessories is sometimes limited.

What is desired, therefore, is a blow molded case for housing an objectas well as accessories of the object. What is further desired is a blowmolded case that has a high carry capacity, yet is not heavy orcumbersome. What is also desired is a blow molded case that is easy andinexpensive to manufacture, does not produce residual sawdust and/orcharred plastic, and does not require a long blow molding cycle.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a blowmolded case that maximizes the amount of useable space between the innerand outer walls of the base portion of the case.

It is a further object of the present invention to provide a blow moldedcase that minimizes the size of the exterior of the case.

It is yet another object of the present invention to provide a blowmolded case that does not require additional manufacturing steps afterthe blowing cycle.

In order to overcome the deficiencies of the prior art and to achieve atleast some of the objects and advantages listed, the invention comprisesa blow molded case for housing a first object and a second object,including a blow-molded, double wall base portion, the base portioncomprising an outer case wall, an inner case wall for accommodating atleast part of the first object, and a cavity at least partially enclosedby the inner and outer walls, and a lid portion connected to the baseportion and moveable from an open position to a closed position suchthat, when in the closed position, the lid portion at least partiallycovers the inner case wall of the base portion, wherein the outer wallof the base portion has a hole therethrough for passing the secondobject through the outer wall and into the cavity.

In some these embodiments, the hole is a punched hole that correspondsto at least part of the outline of the second object. In someembodiments, the base portion has a mold parting line, the outer wall ofthe base portion includes a sidewall extending substantiallyperpendicular to the parting line, and the hole is located in thesidewall of the base portion. In certain of these embodiments, thesidewall of the base portion is arcuate, such that the hole therethroughis multi-planar. In some embodiments, the sidewall of the base portionincludes a recess adjacent the hole.

In some these embodiments, the invention includes a receptacleinsertable through the hole and into the cavity.

In other embodiment, the invention comprises a blow molded case forhousing a first object and a second object, including a blow-molded,double wall base portion, the base portion comprising an outer case walland an inner case wall for accommodating at least part of the firstobject, and a blow-molded, double wall lid portion connected to the baseportion, the lid portion comprising an outer case wall and an inner casewall at least partially enclosing a cavity, the lid portion beingmoveable from an open position to a closed position such that, when inthe closed position, the inner case wall of the lid portion at leastpartially covers the inner case wall of the base portion, wherein theouter wall of the lid portion has a hole therethrough for passing thesecond object through the outer wall of the lid portion and into thecavity.

In still another embodiment, the invention comprises a method forcreating the base portion of a blow molded case having inner and outercase walls, the method including the steps of moving a first moldportion adjacent a second mold portion along a seam, thereby creating acavity having a cavity surface, blowing the inner and outer case wallsof the base portion of a case against the cavity surface, and creating ahole in the outer case wall of the base portion.

In some of these embodiments, the invention includes extending at leastpart of a punch parallel to the seam, through the outer case wall andinto the cavity.

In yet another embodiment, the invention comprises an apparatus forcreating the base portion of a blow molded case having inner and outercase walls, including a mold having first and second mold portions that,when located adjacent each other along a seam, at least partiallyenclose at least one cavity having a cavity surface, wherein the cavitysurface includes outer and inner case wall portions, against which theouter and inner walls of the base portion of the case are blown,respectively, during blow-molding, and a punch having a punchingsurface, wherein, when the punch is in an unactivated position, theouter case wall portion of the cavity surface includes the punchingsurface and, when the punch is in an activated position, the punch isextended past the outer wall of the case and into the cavity such that ahole is created in the outer wall of the case.

In some of these embodiments, the outer case wall portion of the cavitysurface includes a section substantially perpendicular to the seam,against which a sidewall of the outer wall of the base portion of thecase is blown during blow molding, and the substantially perpendicularsection includes the punching surface when the punch is in anunactivated position, and the punch is extended past the sidewall whenthe punch is in an activated position.

In certain of these embodiments, the substantially perpendicular sectionof the outer case wall portion of the cavity surface has a non-planararea. In some embodiments, the substantially perpendicular section ofthe outer case wall portion of the cavity surface or the punchingsurface of the punch includes a protuberance extending into the cavityadjacent the punching surface when the punch is in an unactivatedposition, such that a recess is formed in an outer surface of the outercase wall during blow molding.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is an isometric view of a double wall, blow molded case inaccordance with the invention.

FIG. 1B is an end view of a double wall, blow molded case of FIG. 1.

FIG. 2 is a perspective, exploded view of the case of FIG. 1 in the openposition.

FIG. 3 is a plan view of the end of the case of FIG. 1.

FIG. 4A is an end view, in partial cross-section, of the case along lineA-A of FIG. 3.

FIG. 4B is a side view, in partial cross-section, of the case along lineB-B of FIG. 3.

FIG. 5A is a cross-sectional view of the system for making the case ofFIG. 1 with the punches in an unactivated position.

FIG. 5B is a cross-sectional view of the system of FIG. 5A with thepunches in an activated position.

FIG. 5C is an isometric view of a punch of the system of FIG. 5A.

FIG. 5D is a partially exposed side view of the mold of FIG. 5A.

FIG. 5E is a cross-sectional view of the system of FIG. 5A with thepunches slightly extended.

DETAILED DESCRIPTION OF THE INVENTION

The basic components of one embodiment of a blow molded case inaccordance with the invention are illustrated in FIGS. 1-2. As used inthe description, the terms “top,” “bottom,” “above,” “below,” “over,”“under,” “above,” “beneath,” “on top,” “underneath,” “up,” “down,”“upper,” “lower,” “front,” “rear,” “back,” “forward” and “backward”refer to the objects referenced when in the orientation illustrated inthe drawings, which orientation is not necessary for achieving theobjects of the invention.

The case 10 includes a double wall base portion 12 and a lid portion 14connected thereto. In some embodiments, the lid portion 14 is a separatepiece that is connected to the base portion 12 after the blow moldingprocess is completed via a hinge mechanism 15. However, like the baseportion 12, the lid portion 14 may also be a blow molded article, andthus, in certain embodiments, the lid portion 14 is integrally formedwith the base portion 12 during a single blow molding process.

The base portion 12 has an inner case wall 22 and an outer case wall 24,which at least partially enclose a cavity 26 (which is best illustratedin FIG. 4B). The inner case wall 22 is adapted to accommodate a firstobject 21, which may, for example, be a tool of some sort. The lidportion 14 is moveable between open and closed positions, such that,when in a closed position, the lid portion at least partly covers theinner case wall 22 of the base portion 12, including the first object 21(and any other possible accessories) accommodated therein. The lidportion 14 typically includes at least one clasp 29 or other lockingmechanism for keeping it in the closed position, and may include atranslucent section 18 for viewing the object 21.

Any of various configurations may be employed for the surface of theinner case wall 22, including various recesses and/or holes therethroughin whatever shapes and sizes as may be appropriate to accommodate thetool, as well as any other accessories that it may be desired to carryin the case 10. For example, the inner case wall 22 may have a recess 60for accommodating the first object 21, which may, as examples, be a toolor a primary container, and may, in some embodiments, include additionalrecesses 62 for accessories. In certain advantageous embodiments, theinner case wall 22 includes holes, such as punched holes 64, 66, forreceiving the objects and utilizing some of the cavity 26 foraccommodating same. Various mold planes and punches can be used tocreate any variety of through-holes, blind holes, flanges, or sidewallsfor accommodating, and providing support for, these various objects, asis more fully taught in U.S. patent application Ser. Nos. 10/958,824 and11/105,721. Similarly, the lid portion 14 may also include an inner casewall 37 with recesses and/or holes for accommodating the top of theobjects when the case 10 is closed, as is described in theaforementioned applications.

The outer case wall 24 includes a sidewall 25 that runs around theperimeter of the base portion 12, including the front, back, and ends ofthe case 10 when oriented in an upright position. The sidewall 25extends in a direction substantially perpendicular to a mold partingline 23 of the base portion 12, which parting line is the result of theinner and outer case walls 22, 24 being blown against a seam joiningfirst and second portions of a mold, as is further explained below.

The sidewall 25 has at least one hole 20 that corresponds to the outlineof a second object 31, which may, for instance, be a receptacle forholding various parts or accessories of a tool, such as a tray, adrawer, or a removable container of some sort. Accordingly, thereceptacle 31 may be inserted through the hole 20 and into the cavity 26between the inner and outer case walls 22, 24.

In embodiments where the lid portion 14 is also a double wall, blowmolded article, the hole 20 may be formed in the outer case wall 38 ofthe lid portion 14 instead of the base portion 12. In other embodiments,a hole may be formed in both the base and lid portions 12, 14, such thatthe hole 20 in the lid portion 14 can accommodate a third object.

As shown in FIG. 4A, in certain advantageous embodiments, the outer wall24 of the base portion 12 includes a plurality of ribs 32 for engagingthe bottom 34 of the receptacle 31 when it is inserted into the hole 20.The ribs 32 serve both to guide the receptacle 31 as it is pushed backinto the cavity 26 and, when fully inserted, help limit the movement ofthe receptacle 31 when the case 10 is moved.

In some embodiments, the base portion 12 includes a smaller cavity 33near the top edge thereof, which creates a sort of pocket above thereceptacle 31. This can be useful particularly, for example, inembodiments employing a drawer, as the cavity 33 can be employed to helpretain the drawer 31 in a desired position or to provide a track featureif so desired.

As shown in FIG. 4B, in some embodiments, the base portion 12 has atleast one protrusion 46 in the outer case wall 24, which extendsinwardly toward the inner case wall 22 and substantially perpendicularto the parting line 23. Such protrusions can serve many purposes in thebase portion 12.

For example, in some embodiments, a protrusion is specifically sized andshaped to correspond to a particular portion of the first object 21, andmay be shaped to fit into a particular aperture or recess thereof, whilein other embodiments, a protrusion may merely be shaped to correspond toa particular portion of the outline of the object 21 in order to helpkeep it in place, while in still other embodiments, protrusions maysimply be positioned at a location that corresponds to the length orwidth of the object 21 in order to restrain its movement. In this way,various compartments may be created for various objects, such as a mainsection for the object 21 and auxiliary sections for cords or otheraccessories, as is more fully explained in the aforementionedapplications.

In certain advantageous embodiments, a protrusion 46 is specificallypositioned at a location corresponding to the length of the receptacle31 in order to limit its movement into the cavity 26.

In some embodiments, the sidewall 25 is non-planar. For example, asshown most clearly in FIG. 3, in some embodiments, the sidewall has agenerally arcuate shape. Moreover, returning to FIG. 2, in certainadvantageous embodiments, a recess 27 is provided in the sidewall 25adjacent the hole 20, thereby resulting in a multi-planar surface.Accordingly, when the receptacle 31 is inserted into the hole 20 andpushed all the way into the cavity 26 until it abuts the protrusion 46,one can still easily grip the receptacle 31 to withdraw it therefrombecause the recess 27 forms a finger-grip by which one can access thebottom of the receptacle 31. In particularly advantageous embodiments, arecess 27 is located adjacent the hole 20 both above and below the hole20 for this purpose.

In some embodiments, the receptacle 31 includes a number of small bosses35 on the underside 34 thereof for further engaging the ribs 32 andproviding a small locking effect as the receptacle 31 is slid into thecavity 26. In certain embodiments, the receptacle 31 also includestracks 36 along its sides for guiding and/or retaining the receptacle 31in a particular portion of the case 10. For example, as shown in FIG. 1,in certain advantageous embodiments, the outer case wall 38 of the lidportion 14 includes a recessed portion 39 corresponding to at least partof an outline of the receptacle 31. The recessed portion 39 may have itsown recess 41 to provide a finger grip, or protrusions 43 for engagingthe tracks 36 of the receptacle 31. While the recessed portion 39 isshown in the lid portion 14, such a recess could also be formed in thebase portion 12, depending on the particular size and shape of the baseportion 12.

As illustrated in FIGS. 5-6, a system for creating the base portion 12of the case 10 of FIG. 1 comprises a mold 50 including a first moldportion 52 and a second mold portion 54. The first mold portion 52includes first, second, and third punches 56, 57, 58, having punchingsurfaces 66, 67, 68, respectively. When the first and second moldportions 52, 54 are separated, such as when a parison is being disposedin the mold 50, the punches 56, 57, 58 are in an unactivated position.As shown in FIG. 5A, when the first and second mold portions 52, 54 aremoved adjacent each other along a seam 53 (i.e., when the mold 50 isclosed), the punches 56, 57, 58 remain in the unactivated position whilethe parison is being injected with blowing fluid. Accordingly, portionsof the punch 56 form part of the surface against which the inner casewall 22 of the base portion 12 is blown, and portions of punches 57, 58form part of the surface against which the outer case wall 24 of thebase portion 12 is blown. Later, when it is desired to punch holes inthe inner and outer case walls 22, 24, the punches 56, 57, 58 are movedto an activated position, as shown in FIG. 5B.

The operation of the mold portions 52, 54 and the punches 56, 57, 58will now be described. When the first mold portion 52 is adjacent thesecond mold portion, a cavity 70 is formed. For example, referring toFIG. 5D, when the punches 56, 57, 58 are in the unactivated position,the cavity 70 has a cavity surface 80 comprised of the mold surfaces 72,73 of the mold portions 52, 54, respectively, and the punching surfaces66, 67, 68. This cavity surface 80 defines the cavity 70. When blowingfluid is injected into the parison, the walls of the blow molded caseare blown against the cavity surface 80.

As shown in FIG. 5E, in some embodiments, one or more of the punches 56,57, 58 are in a slightly extended position as the walls of the case areblown. Because the punch protrudes out into the cavity 70, the plasticmaterial thins around the edge of the punch. As a result, the punch willultimately require less force in order to punch the hole 20therethrough. Generally, the more the punch is extended, the thinnerthat portion of the sidewall 25 will be, therefore requiring lesspunching force to create a hole therethrough. Additionally, because thisextension of the punch effectively creates an additional, thin wallextending into the cavity 70 perpendicular to the sidewall 25, this stepcan also be used to provide an additional wall member 59 around theinside of the hole 20 to act as a reinforcing flange therefor.

After a predetermined time interval, the punches 56, 57, 58 are movedfrom an unactivated position to an activated position, as illustrated inFIG. 5B. When this occurs, the punches 56, 57, 58 are extended past thewalls 22, 24 of the base portion 12 of the case 10 and into the cavity70, thereby creating corresponding holes therein. The punch 56, may havea punching surface 66 corresponding to the outline of a tool or otherobject to be housed in the case 10, and thus, a hole in the shape of theobject 21 is created in the inner case wall 22. Similarly, the punches57, 58 have a shape corresponding to the outline of the receptacle 31,such that holes are created in the sidewall 25 that are sized to receivethe receptacle 31.

In some embodiments, a punch is partially extended when in theunactivated position in order to further shape the case walls 22, 24.For example, when in the unactivated position, punch 58 may protrude outbeyond the mold surface 72 into the cavity 70. As a result, when theouter case wall 24 is blown against the cavity surface 80 (whichincludes part of the punch 58), the case wall 24 is formed around thepunch 58. In this way, a recessed portion is formed in the sidewall 25.

This is particularly useful in embodiments where one desires an outercase wall 24 having a hole 20 where the hole itself is multi-planar. Forexample, while the finger-grip recess 27 discussed above may be createdby using a mold portion 54 having a protuberance (not shown) extendinginto the cavity 70 parallel to the seam 53, this may also beaccomplished with a punch 57 having a multi-planer punching surface 67.As shown in FIG. 5C, for example, a raised, rounded protuberance 44 ofthe punching surface 67 may protrude out into the cavity 70 when thepunch 57 is in the unactivated position, such that the outer case wall24 is blown around the protuberance 44 during blow molding. When thepunch 57 is subsequently extended into the cavity 70, the multi-planarpunching surface 67 creates a hole in the multi-planar sidewall 25 atall points at the same degree of extension.

In certain advantageous embodiments, the second mold portion 54 includesa protuberance 84 that extends into the cavity 70. The protuberance 84can be any shape or size appropriate to create the desired protrusion 46in the outer case wall 24. Accordingly, when the case wall 24 is blownagainst the cavity surface 80, protrusion 46 is created. In someembodiments, the protuberance 84 is specifically positioned at alocation corresponding to the length of a receptacle 31 to be insertedthrough the punched hole 20. In certain embodiments, a protuberance 85is provided to create the corresponding rib 32 for engaging the bottomof the receptacle 31. In yet other embodiments, a protuberance 87 isprovided in the top mold portion 52, which can be used, for instance, tocreate the pocket 33.

It should be understood that the foregoing is illustrative and notlimiting, and that obvious modifications may be made by those skilled inthe art without departing from the spirit of the invention. Accordingly,reference should be made primarily to the accompanying claims, ratherthan the foregoing specification, to determine the scope of theinvention.

1. A blow molded case, comprising: a blow-molded, double wall baseportion, said base portion comprising an outer case wall, an inner casewall for accommodating at least part of an object, and a cavity at leastpartially enclosed by said inner and outer walls; a lid portionconnected to said base portion and moveable from an open position to aclosed position such that, when in the closed position, said lid portionat least partially covers the inner case wall of said base portion; anda receptacle; wherein the outer wall of said base portion has a holetherethrough for passing said receptacle through said outer wall andinto said cavity.
 2. The blow molded case of claim 1, wherein the holecomprises a punched hole.
 3. The blow molded case of claim 2, wherein atleast part of the punched hole corresponds to at least part of theoutline of the receptacle.
 4. The blow molded case of claim 3, furthercomprising a wall member corresponding to the outline of the receptaclethat extends inwardly from the outer wall of said base portion aroundthe perimeter of the hole.
 5. The blow molded case of claim 1, wherein:said base portion has a mold parting line; the outer wall of said baseportion includes a sidewall extending substantially perpendicular to theparting line; and the hole is located in the sidewall of the baseportion.
 6. The blow molded case of claim 5, wherein the sidewall ofsaid base portion is arcuate, such that the hole therethrough ismulti-planar.
 7. The blow molded case of claim 5, wherein the sidewallof said base portion includes a recess adjacent the hole.
 8. The blowmolded case of claim 1, wherein the inner case wall of said base portionincludes an inner surface having a protrusion extending into the cavitysubstantially perpendicular to the parting line such that a cavity isformed between said protrusion and the sidewall of said base portion. 9.The blow molded case of claim 1, wherein said receptacle comprises adrawer.
 10. The blow molded case of claim 1, wherein said receptaclecomprises a removable container.
 11. The blow molded case of claim 10,wherein said lid portion includes an outer case wall having a recesstherein corresponding to at least part of the outline of said removablecontainer for accommodating said container.
 12. The blow molded case ofclaim 1, wherein the outer wall of said base portion includes an innersurface having a protrusion extending into the cavity substantiallyperpendicular to the parting line and positioned relative to the hole ata distance corresponding to the length of said receptacle, such thatmovement of said receptacle into the cavity is limited thereby.
 13. Theblow molded case of claim 12, wherein said receptacle has a bottomsurface, and the inner surface of said outer wall includes a pluralityof ribs for engaging the bottom surface of said receptacle.
 14. The blowmolded case of claim 1, wherein said lid portion is hingedly connectedto said base portion.
 15. The blow molded case of claim 1, wherein saidlid portion is a double wall, blow molded portion.
 16. The blow moldedcase of claim 15, wherein: said lid portion comprises an outer case walland an inner case wall at least partially enclosing a second cavity suchthat, when said lid portion is in the closed position, the inner casewall of said lid portion at least partially covers the inner case wallof said base portion; and the outer case wall of said lid portion has ahole therethrough for passing a second object through the outer casewall of said lid portion and into said second cavity.
 17. The blowmolded case of claim 15, wherein said lid portion is integrally moldedwith said lid portion.
 18. The blow molded case of claim 1, wherein theinner wall of said base portion has a hole at least part of whichcorresponds to at least part of the outline of the object for receivingthe object.
 19. A blow molded case, comprising: a blow-molded, doublewall base portion, said base portion comprising an outer case wall andan inner case wall for accommodating at least part of an object; and ablow-molded, double wall lid portion connected to said base portion,said lid portion comprising an outer case wall and an inner case wall atleast partially enclosing a cavity, said lid portion being moveable froman open position to a closed position such that, when in the closedposition, the inner case wall of said lid portion at least partiallycovers the inner case wall of said base portion; and a receptacle;wherein the outer wall of said lid portion has a hole therethrough forpassing said receptacle through the outer wall of said lid portion andinto said cavity.
 20. The blow molded case of claim 19, wherein saidreceptacle comprises a removable container insertable through the holein the outer case wall of said lid portion and into said cavity, whereinthe outer case wall of said base portion has a recess thereincorresponding to at least part of the outline of said removablecontainer for accommodating said container.
 21. A blow molded case,comprising: a blow-molded, double wall base portion, said base portioncomprising an outer case wall, an inner case wall for accommodating atleast part of a first object, and a cavity at least partially enclosedby said inner and outer walls; and a lid portion connected to said baseportion and moveable from an open position to a closed position suchthat, when in the closed position, said lid portion at least partiallycovers the inner case wall of said base portion; wherein the outer wallof said base portion has a hole therethrough for passing said secondobject through said outer wall and into said cavity.
 22. The blow moldedcase of claim 21, wherein: said lid portion comprises an outer case walland an inner case wall at least partially enclosing a second cavity suchthat, when said lid portion is in the closed position, the inner casewall of said lid portion at least partially covers the inner case wallof said base portion; and the outer case wall of said lid portion has ahole therethrough for passing a third object through the outer case wallof said lid portion and into said second cavity.